Gree Inverter VRF System II GMV-140WL/C-T

Was the main board of the outdoor unit replaced?

Ensure initial installation is completed before debugging

Ensure power is not disconnected before installation is finished.

Verify all wires are connected correctly and reliably.

Check that the fixing ring of the compressor foot for transportation is removed.

Remove all sundries from the unit (e.g., metal chips, joint, forceps holder).

Inspect for damage to appearance and pipeline system during transportation.

Calculate and record the required added refrigerant-charging volume based on pipe length.

Record the refrigerant volume still needed if the required volume hasn't been reached.

Ensure the valve for outdoor unit is opened completely after adding refrigerant.

Selection requirement for the vacuum pump

Is the vacuum pump suitable for the refrigerant system?

Enter the final vacuum reading of the vacuum pump (should reach -0.1Mpa)

Enter the air discharge volume of the vacuum pump (should be 4L/S or above)

Enter the precision of the vacuum pump (should be 0.02mmHg or above)

Does the system vacuum pump for R410A have a check valve?

Operation procedure and notices for Vacuum drying

Confirm that the cut-off valve for gas pipe and liquid pipe is at off status.

Connect the governing valve and vacuum heat pump to the detection joint of gas valve and liquid valve using charging conduct pipe.